1 #ifndef _NF_LOG_H 2 #define _NF_LOG_H 3 4 #include <linux/netfilter.h> 5 6 /* those NF_LOG_* defines and struct nf_loginfo are legacy definitios that will 7 * disappear once iptables is replaced with pkttables. Please DO NOT use them 8 * for any new code! */ 9 #define NF_LOG_TCPSEQ 0x01 /* Log TCP sequence numbers */ 10 #define NF_LOG_TCPOPT 0x02 /* Log TCP options */ 11 #define NF_LOG_IPOPT 0x04 /* Log IP options */ 12 #define NF_LOG_UID 0x08 /* Log UID owning local socket */ 13 #define NF_LOG_MASK 0x0f 14 15 #define NF_LOG_TYPE_LOG 0x01 16 #define NF_LOG_TYPE_ULOG 0x02 17 18 struct nf_loginfo { 19 u_int8_t type; 20 union { 21 struct { 22 u_int32_t copy_len; 23 u_int16_t group; 24 u_int16_t qthreshold; 25 } ulog; 26 struct { 27 u_int8_t level; 28 u_int8_t logflags; 29 } log; 30 } u; 31 }; 32 33 typedef void nf_logfn(u_int8_t pf, 34 unsigned int hooknum, 35 const struct sk_buff *skb, 36 const struct net_device *in, 37 const struct net_device *out, 38 const struct nf_loginfo *li, 39 const char *prefix); 40 41 struct nf_logger { 42 struct module *me; 43 nf_logfn *logfn; 44 char *name; 45 struct list_head list[NFPROTO_NUMPROTO]; 46 }; 47 48 /* Function to register/unregister log function. */ 49 int nf_log_register(u_int8_t pf, struct nf_logger *logger); 50 void nf_log_unregister(struct nf_logger *logger); 51 52 int nf_log_bind_pf(u_int8_t pf, const struct nf_logger *logger); 53 void nf_log_unbind_pf(u_int8_t pf); 54 55 /* Calls the registered backend logging function */ 56 __printf(7, 8) 57 void nf_log_packet(u_int8_t pf, 58 unsigned int hooknum, 59 const struct sk_buff *skb, 60 const struct net_device *in, 61 const struct net_device *out, 62 const struct nf_loginfo *li, 63 const char *fmt, ...); 64 65 #endif /* _NF_LOG_H */ 66